A taxonomic revision of Heterostemma Wight & Arn (Asclepiadaceae: Stapelieae) in Australia and the Western Pacific

Abstract

The genus Heterostemma Wight & Arn. is recorded and revised for Australia and the western Pacific island groups of Fiji, Samoa, Tonga and New Caledonia. Heterostemma is represented by three species, H. magnificum P. Forster, sp. nov., H. acuminatum Decne. and H. samoense (A. Gray) P. Forster, comb. nov.